>> the obama administration has come under fire for incorporating the children into that news conference. some conservatives say the children are being used as props. >>> and this weekend scores of children, their parents, and others will descend on washington ahead of president obama's inauguration. the chairs are being placed. dress rehearsals are taking place, but if you're headed to d.c., you better bundle up because the forecast calls for flurries on inauguration day. national guardsmen from more than 25 states making their way to the nation's capital. an estimated 6,000 will be on hand to help with security. and while it may be crowded on the roads, the scene will be a little less hectic at dulles international, the region's busiest airport may close one of its runways to accommodate the private planes flying in some parts -- flying in vips from across the country. >>> our own vip, wolf blitzer, he'll be hosting "the situation room" live from the national mall this afternoon, that starts at 4:00 p.m. eastern and we'll have special inauguration coverage all this weekend sta starting